if I was hazarding a guess, i'd say the worms take soil in and shit it out the other end
if they were in a mafic rich (high iron content) volcanic soil, they may well have enough iron oxide mineral grains in their guts to be affected by magnet. or it could be magic, which is how magnets work
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cumquat may will not be commenting further on the allegations, Thu 1 Apr 2021, 2:06,
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